Often confounded with these last are the two species called in books sooty terns (S.
The commonest species in South America and the Antilles is the sooty or dusky A.
22) belong to this family; like members of several allied genera they are sooty in colour, and somewhat resemble ground beetles (Carabi) in general appearance.
It is the home of the Columbia black-tail deer, western raccoon, Oregon spotted skunk, Douglas red squirrel, Townsends chipmunk, tailless sewellel (Haplodcn rufus), peculiar species of pocket gophers and voles, Pacific coast forms of the great-horned, spotted, screech and pigmy owls, sooty grouse, Oregon ruffed grouse, Stellers jay, chestnutbacked chickadee and Pacific winter wren.
The colour of the skin is a deep copper or chocolate, never sooty black.